. >> sharp words from a disappointed president obama who appeared late today alongside the families of the newtown shooting massacre. the president expressed their disappointment after the senate today defeated a compromise bipartisan bill to expand background checks for gun ownership. the vote was just six short of the 60 needed to pass. gun control advocates were hopeful it would pass as the revised bill did not include a ban on assault weapons or high capacity magazines. >>> turning again to the terror in boston. today we learned the identity of the third person killed in the explosions, a young woman named lu ling xi. she was watching the marathon with two friends when the bombs went off. >>> well, it may have been a matter of fate. a bay area woman in boston to watch her 63-year-old mother run the marathon, missed being in the blast zone by a matter of minutes. more now live from boston with more on that story. terry? >> reporter: and this is a story about that fine line between life and death and how sometimes chance can make all the difference. that woman from san francisco had